ANDREW SMITH DREAMS about finding old junk. In one recurring dream, he discovers an abandoned mill loaded with old gears and equipment. In another, there’s a barn full of wheels, gumball machines, and stoves. Some nights he’s wandering through a fantastic garage sale. In each of these dreams, he responds the same way: He can’t wait to get the stuff home. Real life and dreams merge in Smith’s life. A resident of Lehi, Utah, Smith makes his living sculpting figures from scrap metal and machine parts. Some make noise, pump water, or chime the hour. One has a tornado inside it, created with a fan and a fountain mister. Most contain motors or serve practical functions like holding up lights, aquariums, or weathervanes. Each of them is one of a kind. And each begins with the arbitrary welding together of a few scraps or bolts. His work is shown in numerous galleries, but also in places like the U.S. Patent and Trademark Office Museum in Alexandria, Virginia. An exhibit, conceived of in conne